OK Tigrod B2 SC

OK Tigrod B2 SC is a copper‑coated, low‑alloyed chromium‑molybdenum solid welding wire for GTAW of creep‑resistant 1.25 % Cr 0.5 % Mo steels where high toughness is required.

Key Features

• Low‑alloy (1.25 % Cr, 0.5 % Mo) with copper coating for excellent weldability
• Very low impurity levels (X‑bar max. 10) for temper‑embrittlement resistance
• Suitable for post‑weld heat treatment (PWHT) and step‑cooling applications
• Certified to EN ISO 21952, SFA/AWS A5.28 and CE/UKCA standards

Specifications

• Alloy Type: Low alloyed (1.25 % Cr, 0.5 % Mo)
• Shielding Gas: I1 (EN ISO 14175)
• Classifications: EN ISO 21952‑A, EN ISO 21952‑B, SFA/AWS A5.28 ER80S‑B2
• Approvals: CE EN 13479, UKCA EN 13479
• Typical Wire Composition %: C 0.10, Mn 0.55, Si 0.55, Ni 0.05, Cr 1.4, Mo 0.55
• Typical Weld Metal Analysis %: C 0.073, Mn 0.52, Si 0.55, Cr 1.3, Mo 0.52, etc.
• Tensile Strength (PWHT 1 h @ 620 °C): 740 MPa, Yield Strength: 650 MPa, Elongation: 25 %
• Charpy Impact (PWHT 22 h @ 690 °C, –30 °C): 300 J

Applications

• Refineries, petrochemical and chemical plants
• Power generation pressure vessels
• Creep‑resistant steel components requiring high toughness after PWHT